I found the right sized chainsaw file for the teeth on my American Angler. Slow going but works like a champ. Just a couple of strokes on each tooth and you should be good to go. I think I've sharpened it 3 or 4 times over the years. ( Probably due for one right now actually) I have an Edgepro Pro for my straight edged knives, but it doesn't work for serrated blades. Replacement blades generally aren't too expensive if your current blades are well past their prime.
